close all;
clear all;
clc;

mat1 = ones(3, 5);
mat1 = mat1 - 2.5;
mat1 = mat1 - 1;
mat2 = mat1;
mat2 = mat2*2;
mat2 = mat2/5;
mat1(1+1, 2+1) = 3;
mat1 = mat1.*mat2;

mat3 = ones(5, 3)*3;
foo = mat1*mat3;

mat4 = [1 3 4; 2 5 8; 9 7 6];
foo = inv(mat4);

[V, D] = eig(mat4);
